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Mathematics, 04.01.2020 05:31 isyssjones42
Brianna's teacher asks her which of these three expressions are equivalent to each other.
expression a: 9x-3x-4
expression b: 12x-4
expression c: 5x+x-4
brianna says that all three expressions are equivalent because the value of each one is -4 when x=0.
brianna's thinking is incorrect.
• identify the error in brianna's thinking.
• determine which of the three expressions are equivalent.
• explain or show your process in determining which expressions are equivalent.
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Answers: 3
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